They are struggling to enforce domestic IP law because it directly affects their own businesses, they don't care about international IP law.
Human nature is the same in any time period, there is no "normalization" at all, it's just how humans have always and will always continue to act, even today, with the world order currently breaking down.
Human nature may be the same, but it differs based on context. Humans act differently in a threatening high risk, low order world than they do in a more stable, lawful world. There is normalization, because in a pre-nuclear, pre-military alliance, pre-diplomacy, pre-world-police world you had to be much more ruthless and cunning as a state. The norms for people were completely different.
I see no evidence that they do act substantially differently post nukes given everything going on in the world in the news today. Regardless, this thread is going off topic, have a good day.